Use our strnlen on MacOS for backward compat

Apparently MacOS didn't have strnlen on 10.6 and earlier.  To
avoid having linking problems on older versions, we'll just use
our internal version.

diff --git a/src/posix.h b/src/posix.h
index f529914fef2d3b6e2ccae4ce7755f4f7fe635624..0d9be49a96276a74bdb09e258005b9cd3c61257b 100644 (file)
--- a/src/posix.h
+++ b/src/posix.h
@@ -89,13 +89,17 @@ extern struct tm * p_gmtime_r (const time_t *timer, struct tm *result);
 #      include "unix/posix.h"
 #endif
 
-#if defined(__MINGW32__) || defined(__sun)
+#if defined(__MINGW32__) || defined(__sun) || defined(__APPLE__)
+#   define NO_STRNLEN
+#endif
+
+#ifdef NO_STRNLEN
 GIT_INLINE(size_t) p_strnlen(const char *s, size_t maxlen) {
        const char *end = memchr(s, 0, maxlen);
        return end ? (size_t)(end - s) : maxlen;
 }
 #else
-# define p_strnlen strnlen
+#   define p_strnlen strnlen
 #endif
 
 #ifdef NO_READDIR_R